Definition of "casualness"

The controlled way in which Germans and other northern Europeans approach life is quite different from the casualness that characterizes American attitudes.

1997, Michael L. Frankel, Cruising the Gulags:

America insulted the rest of the planet, thought Malik Solanka in his old-fashioned way, by treating such bounty with the shoulder-shrugging casualness of the inequitably wealthy.

2001, Salman Rushdie, Fury: A Novel, London: Jonathan Cape, page 6